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Stupidity is contagious -- even respectable companies can catch it. As we do every week, let's take a look at five dumb financial events this week that may make your head spin.

1. Penney for your thoughtsJ.C. Penney (NYSE: JCP) shares tumbled 10% on Wednesday after the company reported that it's happy with its turnaround initiatives.

If that seems to be a peculiar move in light of the struggling department store chain's optimism, it's really a matter of what it didn't say.

"The company is pleased with its performance for the holiday period, showing continued progress in its turnaround efforts," J.C. Penney offered up.

That was pretty much it. There were no hard metrics on its performance like there were a month earlier when it was bragging about a 10.1% spike in November comps. Then again, with comps plummeting 31.7% during the prior year's holiday quarter, it's not as if the bar was set high. By sidestepping its December performance investors are left to their own imagination in conjuring how bad the telltale holiday shopping season went.

Yes, J.C. Penney is sticking to its earlier guidance of positive comps for the entire quarter ending later this month. However, November was a big month for the retailer -- it could close out the quarter with positive comps even if December and January turn out to be negative.

2. Here's a Nook knock joke The ghost of Borders isn't laughing, but it seems as if Barnes & Noble's (NYSE: BKS) plan to survive the digital age is running dry on virtual ink.

Barnes & Noble posted its results for the nine-week holiday period. The superstore is holding up fairly well, with comps for its non-Nook products down a mere 0.2% during the critical holiday shopping season.

The news isn't as kind on the Nook front, where sales continue to plummet. Device and accessory sales plunged 66.7%. The drop isn't a surprise: Barnes & Noble didn't even put out a new tablet in 2013. However, it has to be a shock to see digital content sales fall 27.3% to account for just 3% of Barnes & Noble's total sales.

The cumulative number of Nook products increases with every quarter, yet digital sales continue to drop? This story won't end well.

3. GameStop lives up to its nameOutside of Michael Bay, who panicked during a Samsung presentation when the teleprompter malfunctioned, there weren't too many losers at this week's CES.

However, one company's announcement did cause shares of GameStop (NYSE: GME) to tumble 8% on Tuesday. Sony introduced PlayStation Now at CES, and the streaming gaming service is naturally bad news for GameStop if it takes off. We're talking about diehard PlayStation gamers who won't need to purchase games on optical discs, and no more used games to trade in. That last point is huge, since GameStop's biggest margins lie in its resale of preowned games and gear.

GameStop investors have always known that they are buying into a transitory retailer. The stock soared last year as the success of new consoles delayed its demise, but the fade is inevitable. PlayStation Now is just another reminder that gaming is going direct and digital.

4. Apple's original sinAnalysts have downgraded Apple (NASDAQ: AAPL) because its margins have contracted over the past year, but now there's one Wall Street pro knocking the consumer tech bellwether because its margins are too high.

Standpoint Research's Ronnie Moas downgraded Apple as an investment on ethical grounds, arguing that it should be paying employees more to assemble its products. Moas is talking about Apple's relationship with China's Foxconn, the contract manufacturer that pieces together many of Apple's products, where employees reportedly get paid roughly $2 an hour.

It's a call that doesn't make sense. There's definitely a place for socially responsible investing, but when an analyst issues a sell rating based on social recommendations that would shrink a company's already challenged profitability level it's a disservice all around.

5. Letting the air out of the mattressOnce again we find Select Comfort (NASDAQ: SCSS) coming up short.

The company behind the air-chambered Sleep Number beds that provide adjustable firmness settings warned that its holiday sales fell short of earlier expectations. Select Comfort is warning that comps were flat. Its mid-November guidance was based on profit projections with comps rising in the mid-single digits.It's naturally going to fall short now.

Investors should be used to this by now. Select Comfort has missed Wall Street's profit targets in each of the past four quarters. It's a predictable sleeping pattern.

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Rick has been writing for Motley Fool since 1995 where he's a Consumer and Tech Stocks Specialist. Yes, that's a long time. He's been an analyst for Motley Fool Rule Breakers and a portfolio lead analyst for Motley Fool Supernova since each newsletter service's inception. He earned his BBA and MBA from the University of Miami, and he now lives a block from his alma mater.
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